ID on green algae please

[Unstoppable algae!]

When searching it looks like green coralline. I suspect it may be green cyano? It scrapes off very easy with Brush but is only growing on rocks.
I'd please.

Nitrates. 35
Phosphate. .25

 

[blaxsun]

It looks like green cyano.

 

[Zach B]

+1